The following bar chart describes the sales figures of games software, CDs and DVD all over the world.
Clearly, the trends of sales volume are different among the 3 types of products.
There was an increasing number of sales of games software from 12 billion dollars in 2000 to 32 billion dollars in 2003. In contrast, the sales volume of CDs was falling steadily between 2000 to 2003. Furthermore, the sales volume of DVD/video increased sharply from about 20 billion dollars in 2000 to 30 billion dollars in 2003.
Clearly, the trends of sales volume are different among the 3 types of products.
There was an increasing number of sales of games software from 12 billion dollars in 2000 to 32 billion dollars in 2003. In contrast, the sales volume of CDs was falling steadily between 2000 to 2003. Furthermore, the sales volume of DVD/video increased sharply from about 20 billion dollars in 2000 to 30 billion dollars in 2003.